11mth DS keeps pulling my nose!

he is always doing this and tries to stick his fingers up my nostrils why does he do this - curiosity? he cut it the other day and it bled for a while. i tell him to be gentle and show him what gentle is but to no avail

I have this exact problem - DS is just starting to get the hang of body parts so I feel bad about putting him off when I've spent the last eleven months saying 'nose' to him! But it does hurt... Especially with those scratchy nails...